I have had 2 of the BeCool sender fail. The fan will turn on and will not shut off after a few months of use (checked them with IR in the engine and on the bench) They replaced one under warrantee. I am trying to find a sensor that is over the counter so if it fails I don't need to special order it. Does anyone know of a OE sensor that would work in the head or t-stat housing. I know the head temp will be higher than the housing.